Re: [PATCH] blk-mq: avoid stall during boot due to synchronize_rcu_expedited

--- linux-2.6.orig/block/blk-mq.c	2026-01-06 16:45:11.000000000 +0100
+++ linux-2.6/block/blk-mq.c	2026-01-06 16:48:00.000000000 +0100

@@ -4553,8 +4553,7 @@ static void __blk_mq_realloc_hw_ctxs(str
  		 * Make sure reading the old queue_hw_ctx from other
  		 * context concurrently won't trigger uaf.
  		 */
-		synchronize_rcu_expedited();
-		kfree(hctxs);
+		kfree_rcu_mightsleep(hctxs);
  		hctxs = new_hctxs;
  	}